public class Example15 {
    public static void main(String[] args) {
        int i,j;
        for (i=1;i<=9;i++){
            for (j=1; j<=i; j++){
                System.out.print("*");//print输出不换行
            }
            System.out.print("\n");// \n相当于回车换行
        }
    }
}
